java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_1_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:40:50,615 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:40:50,617 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:40:50,633 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:40:50,634 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:40:50,635 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:40:50,636 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:40:50,637 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:40:50,640 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:40:50,640 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:40:50,641 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:40:50,641 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:40:50,642 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:40:50,644 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:40:50,644 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:40:50,647 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:40:50,649 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:40:50,651 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:40:50,652 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:40:50,653 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:40:50,656 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:40:50,656 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:40:50,656 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:40:50,657 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:40:50,658 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:40:50,659 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:40:50,659 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:40:50,660 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:40:50,660 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:40:50,660 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:40:50,661 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:40:50,661 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-24 20:40:50,670 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:40:50,671 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:40:50,671 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:40:50,671 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:40:50,672 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:40:50,672 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:40:50,672 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:40:50,672 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:40:50,672 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:40:50,673 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:40:50,673 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:40:50,673 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:40:50,673 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:40:50,674 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:40:50,674 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:40:50,674 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:40:50,674 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:40:50,674 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:40:50,675 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:40:50,675 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:40:50,675 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:40:50,675 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:40:50,675 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:40:50,676 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:40:50,676 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:40:50,676 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:40:50,676 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:40:50,676 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:40:50,676 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:40:50,677 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:40:50,677 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:40:50,677 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:40:50,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:40:50,677 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:40:50,678 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:40:50,678 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:40:50,679 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:40:50,713 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:40:50,726 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:40:50,730 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:40:50,731 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:40:50,732 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:40:50,732 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_1_false-valid-memtrack_true-termination.i [2018-01-24 20:40:50,917 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:40:50,923 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:40:50,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:40:50,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:40:50,931 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:40:50,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:40:50" (1/1) ... [2018-01-24 20:40:50,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388a8c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:40:50, skipping insertion in model container [2018-01-24 20:40:50,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:40:50" (1/1) ... [2018-01-24 20:40:50,947 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:40:50,992 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:40:51,110 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:40:51,134 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:40:51,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:40:51 WrapperNode [2018-01-24 20:40:51,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:40:51,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:40:51,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:40:51,146 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:40:51,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:40:51" (1/1) ... [2018-01-24 20:40:51,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:40:51" (1/1) ... [2018-01-24 20:40:51,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:40:51" (1/1) ... [2018-01-24 20:40:51,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:40:51" (1/1) ... [2018-01-24 20:40:51,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:40:51" (1/1) ... [2018-01-24 20:40:51,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:40:51" (1/1) ... [2018-01-24 20:40:51,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:40:51" (1/1) ... [2018-01-24 20:40:51,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:40:51,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:40:51,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:40:51,193 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:40:51,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:40:51" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:40:51,237 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:40:51,237 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:40:51,237 INFO L136 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2018-01-24 20:40:51,237 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 20:40:51,238 INFO L136 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2018-01-24 20:40:51,238 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2018-01-24 20:40:51,238 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2018-01-24 20:40:51,238 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2018-01-24 20:40:51,238 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2018-01-24 20:40:51,238 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2018-01-24 20:40:51,238 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2018-01-24 20:40:51,238 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2018-01-24 20:40:51,238 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2018-01-24 20:40:51,238 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2018-01-24 20:40:51,239 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2018-01-24 20:40:51,239 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2018-01-24 20:40:51,239 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2018-01-24 20:40:51,239 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2018-01-24 20:40:51,239 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 20:40:51,239 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:40:51,239 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:40:51,239 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:40:51,239 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 20:40:51,239 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 20:40:51,240 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:40:51,240 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:40:51,240 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:40:51,240 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-24 20:40:51,240 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-24 20:40:51,240 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:40:51,240 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:40:51,240 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:40:51,240 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-24 20:40:51,240 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 20:40:51,241 INFO L128 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2018-01-24 20:40:51,241 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2018-01-24 20:40:51,241 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2018-01-24 20:40:51,241 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2018-01-24 20:40:51,241 INFO L128 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2018-01-24 20:40:51,241 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2018-01-24 20:40:51,241 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2018-01-24 20:40:51,241 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2018-01-24 20:40:51,241 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2018-01-24 20:40:51,241 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2018-01-24 20:40:51,242 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2018-01-24 20:40:51,242 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2018-01-24 20:40:51,242 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2018-01-24 20:40:51,242 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2018-01-24 20:40:51,242 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2018-01-24 20:40:51,242 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 20:40:51,242 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:40:51,242 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:40:51,243 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:40:51,473 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-24 20:40:51,628 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:40:51,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:40:51 BoogieIcfgContainer [2018-01-24 20:40:51,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:40:51,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:40:51,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:40:51,632 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:40:51,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:40:50" (1/3) ... [2018-01-24 20:40:51,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f8851c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:40:51, skipping insertion in model container [2018-01-24 20:40:51,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:40:51" (2/3) ... [2018-01-24 20:40:51,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f8851c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:40:51, skipping insertion in model container [2018-01-24 20:40:51,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:40:51" (3/3) ... [2018-01-24 20:40:51,635 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test22_1_false-valid-memtrack_true-termination.i [2018-01-24 20:40:51,642 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:40:51,648 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2018-01-24 20:40:51,686 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:40:51,686 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:40:51,687 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:40:51,687 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:40:51,687 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:40:51,687 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:40:51,687 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:40:51,687 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:40:51,688 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:40:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2018-01-24 20:40:51,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 20:40:51,712 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:40:51,713 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:40:51,713 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-24 20:40:51,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1956546830, now seen corresponding path program 1 times [2018-01-24 20:40:51,718 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:40:51,763 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:40:51,763 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:40:51,763 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:40:51,764 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:40:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:40:51,813 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:40:52,002 WARN L143 SmtUtils]: Spent 105ms on a formula simplification that was a NOOP. DAG size: 6 [2018-01-24 20:40:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:40:52,042 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:40:52,042 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:40:52,042 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:40:52,045 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:40:52,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:40:52,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:40:52,063 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 5 states. [2018-01-24 20:40:52,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:40:52,125 INFO L93 Difference]: Finished difference Result 272 states and 287 transitions. [2018-01-24 20:40:52,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:40:52,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 20:40:52,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:40:52,137 INFO L225 Difference]: With dead ends: 272 [2018-01-24 20:40:52,137 INFO L226 Difference]: Without dead ends: 145 [2018-01-24 20:40:52,140 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:40:52,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-01-24 20:40:52,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2018-01-24 20:40:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-24 20:40:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2018-01-24 20:40:52,174 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 17 [2018-01-24 20:40:52,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:40:52,175 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2018-01-24 20:40:52,175 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:40:52,175 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2018-01-24 20:40:52,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 20:40:52,176 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:40:52,176 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:40:52,176 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-24 20:40:52,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1123892084, now seen corresponding path program 1 times [2018-01-24 20:40:52,176 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:40:52,177 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:40:52,177 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:40:52,178 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:40:52,178 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:40:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:40:52,200 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:40:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:40:52,271 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:40:52,271 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:40:52,271 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:40:52,272 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:40:52,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:40:52,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:40:52,273 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand 6 states. [2018-01-24 20:40:52,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:40:52,455 INFO L93 Difference]: Finished difference Result 145 states and 153 transitions. [2018-01-24 20:40:52,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:40:52,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-24 20:40:52,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:40:52,457 INFO L225 Difference]: With dead ends: 145 [2018-01-24 20:40:52,458 INFO L226 Difference]: Without dead ends: 144 [2018-01-24 20:40:52,459 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:40:52,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-01-24 20:40:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2018-01-24 20:40:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-24 20:40:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 150 transitions. [2018-01-24 20:40:52,473 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 150 transitions. Word has length 19 [2018-01-24 20:40:52,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:40:52,474 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 150 transitions. [2018-01-24 20:40:52,474 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:40:52,474 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 150 transitions. [2018-01-24 20:40:52,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 20:40:52,475 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:40:52,475 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:40:52,475 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-24 20:40:52,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1123892085, now seen corresponding path program 1 times [2018-01-24 20:40:52,476 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:40:52,477 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:40:52,477 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:40:52,477 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:40:52,477 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:40:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:40:52,498 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:40:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:40:52,890 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:40:52,890 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:40:52,890 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:40:52,891 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:40:52,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:40:52,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:40:52,891 INFO L87 Difference]: Start difference. First operand 142 states and 150 transitions. Second operand 7 states. [2018-01-24 20:40:53,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:40:53,073 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2018-01-24 20:40:53,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 20:40:53,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-24 20:40:53,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:40:53,076 INFO L225 Difference]: With dead ends: 144 [2018-01-24 20:40:53,076 INFO L226 Difference]: Without dead ends: 143 [2018-01-24 20:40:53,076 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:40:53,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-01-24 20:40:53,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2018-01-24 20:40:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-01-24 20:40:53,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2018-01-24 20:40:53,089 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 19 [2018-01-24 20:40:53,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:40:53,090 INFO L432 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2018-01-24 20:40:53,090 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:40:53,090 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2018-01-24 20:40:53,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 20:40:53,091 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:40:53,091 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:40:53,091 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-24 20:40:53,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1414777661, now seen corresponding path program 1 times [2018-01-24 20:40:53,092 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:40:53,093 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:40:53,093 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:40:53,093 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:40:53,093 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:40:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:40:53,110 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:40:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:40:53,185 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:40:53,186 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 20:40:53,186 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:40:53,186 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:40:53,186 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:40:53,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:40:53,187 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand 7 states. [2018-01-24 20:40:53,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:40:53,254 INFO L93 Difference]: Finished difference Result 235 states and 247 transitions. [2018-01-24 20:40:53,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 20:40:53,255 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-01-24 20:40:53,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:40:53,257 INFO L225 Difference]: With dead ends: 235 [2018-01-24 20:40:53,258 INFO L226 Difference]: Without dead ends: 157 [2018-01-24 20:40:53,259 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:40:53,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-01-24 20:40:53,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 150. [2018-01-24 20:40:53,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-24 20:40:53,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 158 transitions. [2018-01-24 20:40:53,278 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 158 transitions. Word has length 27 [2018-01-24 20:40:53,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:40:53,278 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 158 transitions. [2018-01-24 20:40:53,279 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:40:53,279 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 158 transitions. [2018-01-24 20:40:53,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:40:53,280 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:40:53,280 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:40:53,281 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-24 20:40:53,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1439517623, now seen corresponding path program 1 times [2018-01-24 20:40:53,281 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:40:53,282 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:40:53,282 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:40:53,283 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:40:53,283 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:40:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:40:53,303 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:40:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:40:53,414 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:40:53,414 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 20:40:53,414 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:40:53,415 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 20:40:53,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 20:40:53,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:40:53,415 INFO L87 Difference]: Start difference. First operand 150 states and 158 transitions. Second operand 10 states. [2018-01-24 20:40:53,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:40:53,623 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2018-01-24 20:40:53,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 20:40:53,683 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-01-24 20:40:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:40:53,684 INFO L225 Difference]: With dead ends: 150 [2018-01-24 20:40:53,684 INFO L226 Difference]: Without dead ends: 149 [2018-01-24 20:40:53,685 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-01-24 20:40:53,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-24 20:40:53,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-01-24 20:40:53,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-24 20:40:53,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 157 transitions. [2018-01-24 20:40:53,694 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 157 transitions. Word has length 34 [2018-01-24 20:40:53,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:40:53,694 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 157 transitions. [2018-01-24 20:40:53,694 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 20:40:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 157 transitions. [2018-01-24 20:40:53,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:40:53,695 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:40:53,695 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:40:53,695 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-24 20:40:53,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1439517624, now seen corresponding path program 1 times [2018-01-24 20:40:53,695 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:40:53,696 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:40:53,696 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:40:53,697 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:40:53,697 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:40:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:40:53,714 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:40:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:40:53,742 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:40:53,742 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:40:53,742 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:40:53,742 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:40:53,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:40:53,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:40:53,743 INFO L87 Difference]: Start difference. First operand 149 states and 157 transitions. Second operand 4 states. [2018-01-24 20:40:53,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:40:53,768 INFO L93 Difference]: Finished difference Result 264 states and 278 transitions. [2018-01-24 20:40:53,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:40:53,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-01-24 20:40:53,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:40:53,771 INFO L225 Difference]: With dead ends: 264 [2018-01-24 20:40:53,771 INFO L226 Difference]: Without dead ends: 150 [2018-01-24 20:40:53,772 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:40:53,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-01-24 20:40:53,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-01-24 20:40:53,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-24 20:40:53,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 158 transitions. [2018-01-24 20:40:53,784 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 158 transitions. Word has length 34 [2018-01-24 20:40:53,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:40:53,784 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 158 transitions. [2018-01-24 20:40:53,784 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:40:53,784 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 158 transitions. [2018-01-24 20:40:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-24 20:40:53,786 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:40:53,786 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:40:53,786 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-24 20:40:53,786 INFO L82 PathProgramCache]: Analyzing trace with hash -204456797, now seen corresponding path program 1 times [2018-01-24 20:40:53,786 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:40:53,787 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:40:53,788 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:40:53,788 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:40:53,788 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:40:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:40:53,805 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:40:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:40:53,840 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:40:53,840 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:40:53,841 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-01-24 20:40:53,843 INFO L201 CegarAbsIntRunner]: [0], [2], [6], [10], [31], [36], [52], [59], [63], [67], [70], [72], [73], [77], [79], [80], [130], [133], [134], [135], [137], [138], [139], [157], [158], [159], [160], [161], [163], [169], [173], [179], [193], [194], [195] [2018-01-24 20:40:53,887 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:40:53,887 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown